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  1. Create a new project, or add the SDK to your existing project.
  2. Under Project/Export, add a new HTML5 export preset, and rename it to CrazyGames.
  3. On the Options tab, add the following in the Head Include field:
    <script src=""></script>
    Export preset
  4. On the Features tab, add a custom feature "crazygames". This allows you to check in your code whether the build is running in the CrazyGames export. Custom feature
  5. Create a new script "" extending the Node class for wrapping the SDK. Go to Project/Project Settings and open the Autoload tab. Add the new script here. It is now registered as an Autoload singleton that is instantiated when booting up the game. Autoload
  6. Within, define a global scope variable to store the SDK:
    var SDK = null
  7. In the _ready function, check whether the game is running in the dedicated preset, and return if this is not the case:
    func _ready() -> void:
        if not OS.has_feature("crazygames"): return
  8. Via the JavaScript singleton, access the window, and from it, the SDK.
    var window = JavaScript.get_interface("window")
    SDK = window.CrazyGames.SDK


To test the SDK, export your project using the CrazyGames preset under Project/Export/Export Project. Rename the HTML file to index.html. Go to QATool, select HTML5 as Game Type and upload all files.

Alternatively, you can test locally using the HTML5 debug button in the top right of the editor. You may need to temporalily modify the head include to:

<script crossorigin="anonymous" src=""></script>


The SDK has the following modules:

  • ad - display video ads, detect adblockers
  • banner - display banners
  • game - various game events

Each one of these modules can now be accessed as follows:

SDK.[moduleName], for example

Godot 4

Godot 4 can be used if you build a single threaded version of your game. Be careful as you might encounter audio issues and callbacks are slightly different.

#godot 3
var adStartedCallback = JavaScript.create_callback(self, "adStarted")
var adErrorCallback = JavaScript.create_callback(self, "adError")
var adFinishedCallback = JavaScript.create_callback(self, "adFinished")

#godot 4
var adStartedCallback = JavaScript.create_callback(adStarted)
var adErrorCallback = JavaScript.create_callback(adError)
var adFinishedCallback = JavaScript.create_callback(adFinished)